function addScriptTag(src) {
	var script = document.createElement('script');
	script.setAttribute("type", "text/javascript");
	script.src = src;
	document.body.appendChild(script);
}

// 收集信息
function collectInfo(remoteBaseUrl,appKey) {
	
	var referUrl = document.referrer;
	var host = window.location.host;
	var reqApi = window.location.pathname;

	var param =  "appKey=" + appKey
	
	            +"&referUrl=" +referUrl 
				+"&host=" + host 
				+"&reqApi=" + reqApi;
	
	var url=remoteBaseUrl+"/api/js/visitLog?" + param;
	// ajax(url);
	addScriptTag(url);
}




//根据关键字查询
function queryKeyWord(remoteBaseUrl,appKey,
		                      reqApi,keyword,entType) {
	
	var referUrl = document.referrer;
	var host = window.location.host;
	
	var param = "appKey=" + appKey
	
	          + "&referUrl=" + referUrl 
	          + "&host=" + host 
	          
	          + "&reqApi=" + reqApi
	          + "&keyword=" + keyword
			  + "&entType=" + entType;
			  
			  
	
	var url=remoteBaseUrl+"/api/js/visitLog?" + param;

	addScriptTag(url);	
}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////






//将Ansi编码的字符串进行Base64编码
function encode64(input) {
	var output = "";
	var chr1, chr2, chr3 = "";
	var enc1, enc2, enc3, enc4 = "";
	var i = 0;
	do {
		chr1 = input.charCodeAt(i++);
		chr2 = input.charCodeAt(i++);
		chr3 = input.charCodeAt(i++);
		enc1 = chr1 >> 2;
		enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
		enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
		enc4 = chr3 & 63;
		if (isNaN(chr2)) {
			enc3 = enc4 = 64;
		} else if (isNaN(chr3)) {
			enc4 = 64;
		}
		output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2)
				+ keyStr.charAt(enc3) + keyStr.charAt(enc4);
		chr1 = chr2 = chr3 = "";
		enc1 = enc2 = enc3 = enc4 = "";
	} while (i < input.length);
	return output;
}



//将Base64编码字符串转换成Ansi编码的字符串
function decode64(input) {
	var output = "";
	var chr1, chr2, chr3 = "";
	var enc1, enc2, enc3, enc4 = "";
	var i = 0;
	if (input.length % 4 != 0) {
		return "";
	}
	var base64test = /[^A-Za-z0-9\+\/\=]/g;
	if (base64test.exec(input)) {
		return "";
	}
	do {
		enc1 = keyStr.indexOf(input.charAt(i++));
		enc2 = keyStr.indexOf(input.charAt(i++));
		enc3 = keyStr.indexOf(input.charAt(i++));
		enc4 = keyStr.indexOf(input.charAt(i++));
		chr1 = (enc1 << 2) | (enc2 >> 4);
		chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
		chr3 = ((enc3 & 3) << 6) | enc4;
		output = output + String.fromCharCode(chr1);
		if (enc3 != 64) {
			output += String.fromCharCode(chr2);
		}
		if (enc4 != 64) {
			output += String.fromCharCode(chr3);
		}
		chr1 = chr2 = chr3 = "";
		enc1 = enc2 = enc3 = enc4 = "";
	} while (i < input.length);
	return output;
}



function utf16to8(str) {
	var out, i, len, c;
	out = "";
	len = str.length;
	for (i = 0; i < len; i++) {
		c = str.charCodeAt(i);
		if ((c >= 0x0001) && (c <= 0x007F)) {
			out += str.charAt(i);
		} else if (c > 0x07FF) {
			out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
			out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
			out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
		} else {
			out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
			out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
		}
	}
	return out;
}


function utf8to16(str) {
	var out, i, len, c;
	var char2, char3;
	out = "";
	len = str.length;
	i = 0;
	while (i < len) {
		c = str.charCodeAt(i++);
		switch (c >> 4) {
		case 0:
		case 1:
		case 2:
		case 3:
		case 4:
		case 5:
		case 6:
		case 7:
			// 0xxxxxxx
			out += str.charAt(i - 1);
			break;
		case 12:
		case 13:
			// 110x xxxx 10xx xxxx
			char2 = str.charCodeAt(i++);
			out += String.fromCharCode(((c & 0x1F) << 6) | (char2 & 0x3F));
			break;
		case 14:
			// 1110 xxxx 10xx xxxx 10xx xxxx
			char2 = str.charCodeAt(i++);
			char3 = str.charCodeAt(i++);
			out += String.fromCharCode(((c & 0x0F) << 12)
					| ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0));
			break;
		}
	}
	return out;
}


















//function ajax(url){
//    //1.创建对象
//    var oAjax = null;
//    if(window.XMLHttpRequest){
//        oAjax = new XMLHttpRequest();
//    }else{
//        oAjax = new ActiveXObject("Microsoft.XMLHTTP");
//    }
//      
//    //2.连接服务器  
//    oAjax.open('GET', url, true);   //open(方法, url, 是否异步)
//      
//    //3.发送请求  
//    oAjax.send();
//      
//    //4.接收返回
//    oAjax.onreadystatechange = function(){  //OnReadyStateChange事件
//        if(oAjax.readyState == 4){  //4为完成
//            if(oAjax.status == 200){    //200为成功
//            	  //  alert("200");
//            }else{
//                
//            }
//        }
//    };
//}





